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Mon May 2 23:53:39 2005 UTC (9 years, 6 months ago) by vapier
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dlvsym doesnt exist in uClibc

1 # ChangeLog for Path Sandbox
2 # Copyright 1999-2005 Gentoo Foundation; Distributed under the GPL v2
3 # $Header$
4
5 02 May 2005; Mike Frysinger <vapier@gentoo.org> configure.in, localdecls.h,
6 sandbox.h:
7 uClibc doesn't support dlvsym() so add a configure check to make sure it doesn't
8 exist. Also update localdecls.h so BROKEN_RTLD_NEXT isn't defined in uClibc.
9
10 * sandbox-1.2.3 (2005/04/29)
11
12 29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> configure.in:
13 Do not check for (*&#$(* CXX or F77.
14
15 29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
16 Do not append '/' to pathname in filter_path() if it already ends with it.
17
18 28 Apr 2005; Mike Frysinger <vapier@gentoo.org> Makefile.am, configure.in:
19 With az's help, clean up autotools to work with cross-compiling.
20
21 * sandbox-1.2.2 (2005/04/28)
22
23 28 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
24 Only check for /dev/{null,zero} for unlink hack, else ricers using /dev/shm
25 have issues; bug #90592.
26
27 * sandbox-1.2.1 (2005/04/23)
28
29 23 Apr 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
30 getcwd.c, libsandbox.c, localdecls.h, sandbox.h, sandbox_futils.c:
31 Make sure all functions used in libsandbox.c is declared static. Define
32 SB_STATIC in localdecls.h for this. Include sandbox_futils.c rather than
33 linking with its object. Hopefully this will fix bug #90153.
34
35 * sandbox-1.2 (2005/04/23)
36
37 22 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
38 Allow lchown a symlink in write-allowed path pointing to write-denied
39 target.
40
41 21 Mar 2005; Marius Mauch <genone@gentoo.org> libsandbox.c:
42 Also show resolved symlink names in the log.
43
44 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, libsandbox.c:
45 Seems -nostdlib was the problem with the constructor/destructor - remove it
46 from Makefile.am, and change the constructor/destructor names again.
47
48 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
49 Also rename the _init() and _fini() declarations.
50
51 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c:
52 Fixup the constructor/destructor function names again (they should be _init()
53 and _fini() it seems, and not being called caused sandbox_lib_path to be
54 unset, and thus breaking the execve() wrapper's LD_PRELOAD protection).
55 Add both the path in given SANDBOX_x variable, as well as its symlink
56 resolved path in init_env_entries(). Modify filter_path() to be able to
57 resolve paths without resolving symlinks, as well as to be able to resolve
58 symlinks. Fix a possible segfault in check_access(). Add symlink resolving
59 to check_access() resolving bug #31019. Add 'hack' for unlink, as the fix
60 for bug #31019 cause access violations if we try to remove a symlink that is
61 not in protected path, but points to a protected path. Fix a memory leak in
62 sandbox.c (sandbox_pids_file in main()). Fix the realpath() calls in main()
63 (sandbox.c) being unchecked. Fix the debug logname not having the pid in it
64 (pid_string was uninitialized). General syntax cleanups.
65
66 09 Mar 2005; Brian Harring <ferringb@gentoo.org> sandbox.c: Fixed the
67 infamous "pids file is not a regular file" w/out newline bug.
68
69 09 Mar 2005; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in:
70 Correct libc_version path detection, since it was screwing up if libdir !=
71 "/lib/".
72
73 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
74 Hack to make sure sandboxed process cannot remove a device node, bug #79836.
75
76 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am:
77 Fix symbols.in not added to dist.
78
79 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
80 getcwd.c, libsandbox.c, sandbox.c, sandbox.h, sandbox_futils.c:
81 White space fixes.
82
83 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
84 configure.in, getcwd.c, libsandbox.c, symbols.in:
85 Fix inverse test logic in canonicalize.c, use a strncpy. Fix gcc warning in
86 getcwd.c. Add symbols.in and logic to Makefile.am to generate symbol versions
87 for glibc and other libc's that use this. Update libsandbox.c to use these
88 symbol versions if available. Fix exec wrapper to re-export LD_PRELOAD if the
89 process unset it.
90
91 01 Mar 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
92 killed off _init and _fini in favor of
93 void __attribute__ ((constructor)) init_func and
94 void __attribute__ ((destructor)) closing_func. _(init|func) were deprecated.
95
96 06 Dec 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, libsandbox.c,
97 canonicalize.c, getcwd.c: Fixed compilation *again*. Hopefully cvs is done
98 having the hick-ups.
99
100 04 Dec 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, getcwd.c,
101 Makefile.am: Fixed compilation.
102
103 01 Dec 2004; Brian Harring <ferringb@gentoo.org> aclocal.m4:
104 Gutted the bugger so it stops checking for a c++ and fortran compiler.
105 Do *not* regenerate aclocal.m4 for making a release until a better
106 solution is created.
107
108 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, sandbox_futils.c:
109 Removal of more hardcoded paths.
110
111 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in,
112 sandbox_futils.c: tweaks to install sandbox.bashrc, and use it.
113
114 19 Nov 2004; Brian Harring <ferringb@gentoo.org>:
115 Sandbox is now autotooled, create-localdecls needs to be killed and the code
116 shifted into configure.in. Currently builds *one* libsandbox.so- if multiple
117 are desired (-m64 and -m32 for amd64), the ebuild should do it (imo).
118 To get to a point of testing, automake && autoconf; created requisite files w/
119 a(utomake|clocal)-1.8, and autoconf 2.59. Installs to /usr/, instead of
120 /lib and /usr/lib/portage/bin.
121
122 14 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox.c:
123 closing out bug #70225, potential overflow of the sandbox_pids_file var.
124
125 07 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c: c99 standard,
126 (think it was at least) allows intermixing of code and data segments. bug #70351
127 should be fixed by this.
128
129 03 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox_futils.c:
130 futils fix from bug #65201 via solar, and libsandbox log path checks via #69137
131
132 02 Aug 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Code from
133 Seth Robertson that tracked down all adjuct flags for read operations that
134 do not invoke a write operation.
135
136 04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
137 Another fix from jstubbs regarding a free() on a stack variable for the
138 environment -- tracking now prevents extraneous free()'s segfault.
139
140 04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
141 J. Stubbs tracked down a new bug where mkdir was failing to the patch on
142 the lstat in mkdir... it now only returns 0 or -1 as documented for mkdir.
143 Also remove the errno = ESUCCESS settings as documentation points out that
144 a library isn't allowed to do that.
145
146 04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Added a
147 file_security_check() function to check random potential exploits on files
148 that sandbox is to load and read -- Normally sandboxpids.tmp. This fixes
149 the 'system-crippling' exploits (bug 21923) and catches a few other
150 potential problems.
151
152 20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> Makefile: Updates for
153 32/64 bit sandbox. Made CC and LD '?=' values to allow passed in CC to work.
154
155 20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c:
156 bug 42048 -- Fixed the lstat/errno conditions for mkdir <caleb@g.o>.
157 Added the 64/32 bit sandbox patch for AMD64 bug 32963 <brad/azarah>.
158
159 29 Feb 2004; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c :
160 Fix permissions and group of pids file and logs. Permissions should be 0664
161 and group should be 'portage'. Bug #34260.
162
163 28 Feb 2004; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
164 Besides a small cleanup, redo how we replace LD_PRELOAD in the environ passed
165 to the real execve (in our execve wrapper). Seems that on some arches (sparc
166 among others) do not allow us to tamper with the readonly copy passed to
167 execve, so pass our own copy of the environment. Bug #42290.
168
169 11 Jan 2004; Nicholas Jones <carpaski@gentoo.org> create-decls:
170 Changed tail to head and added a notice about duration of glibc check.
171
172 21 Dec 2003; Nicholas Jones <carpaski@gentoo.org> create-decls:
173 Changed the glibc subversion check to use /usr/bin/* instead of /bin/sh
174 as there isn't a guarentee that it is dynamic.
175
176 02 Nov 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
177 If 'file' passed to before_syscall(const char *func, const char *file) is
178 invalid, we should set errno to ENOENT, and not EINVAL. This should
179 close bug #32238.
180
181 14 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
182 Fix a bug that occurs mainly on 64bit arch, where the file passed to
183 the functions we wrap, is invalid, and then cause canonicalize to pass
184 garbage to before_syscall(), thanks to great detective work from
185 Andrea Luzzardi <al@sig11.org> (bug #29846).
186
187 13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
188 Add a uClibc detection patch from Peter S. Mazinger <ps.m@gmx.net>.
189
190 13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
191 Fix a bug in libsandbox.c 's checking in the rename wrapper - it basically
192 only checked the destination patch, and not the source, so we could move
193 a protected file to a unprotected directory, and then delete/modify it.
194 Thanks to Andrea Luzzardi (scox) <al@sig11.org>, bug #30992, for this fix.
195
196 12 Oct 2003; Nicholas Jones <carpaski@gentoo.org> sandbox.c :
197 Added python2.3 to the predict section/variable.
198
199 28 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
200 sandbox.h, sandbox_futils.c :
201 Add support to set the pids file via SANDBOX_PIDS_FILE at startup. If
202 it is not set, it will revert to its old value.
203
204 27 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
205 Fix our mkdir wrapper to check if the dir exist, and return EEXIST if so,
206 rather than failing with a violation, bug #29748.
207
208 27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
209 Fix canonicalize() to ignore calls with path = "".
210
211 27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c,
212 sandbox_futils.c, canonicalize.c :
213 Once again coreutils fails, as my systems had 2.5 kernel, the getcwd system
214 call handled strings larger than PATH_MAX (bug #21766). It however does not
215 work the same on 2.4 kernels.
216
217 To fix, I added the posix implementation of getcwd() (from glibc cvs) that
218 do not need the system call. We use the default getcwd() function via a
219 wrapper (egetcwd), and then lstat the returned path. If lstat fails, it
220 means the current directory was removed, OR that the the system call for
221 getcwd failed (curious is that it do not fail and return NULL or set
222 errno, but rather just truncate the retured directory - usually from the
223 start), and if so, we use the generic getcwd() function (__egetcwd). Note
224 that we do not use the generic version all the time, as it calls lstat()
225 a great number of times, and performance degrade much.
226
227 29 Jun 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls,
228 libsandbox.c :
229 Make sure SB_PATH_MAX will not wrap. Fix two possible memory leaks.
230
231 22 Jun 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, canonicalize.c
232 create-localdecls :
233 When checking path names of files accessed, we need to canonicalize it, else
234 it may be a symlink in a 'write allowed' directory pointing to a file in a
235 directory we should not have write access to.
236
237 With something like coreutils-5.0, we have two problems:
238 1) One of the tests checks if getcwd() can return a path longer than
239 PATH_MAX. This test then tries to create a dir which even while
240 created local (mkdir("conftest2")), it ends up being resolved with
241 a name that is much larger than PATH_MAX. The problem now is that
242 canonicalize() have undefined behaviour when the path was too long
243 (returned wrongly truncated paths, etc), and pass the wrong path to
244 before_syscall() (causing the bogus sandbox violations).
245 2) The ecanonicalize() function we used, along with the canonicalize()
246 function did not support longer than PATH_MAX. This is partly a
247 cause for 1), but the error checking (rather lack of it) of calls
248 to erealpath() in canonicalize() was the prime reason for 1).
249
250 As we do not use this canonicalized name to call the function, we resolve this
251 by fixing canonicalize() to do better error checking, and ecanonicalize() as
252 well as all functions in libsandbox.c to use a PATH_MAX of 'PATH_MAX * 2'.
253 While they will resolve paths properly now, and can check if a write/read is
254 allowed, the functions called from the sandboxed environment will still work
255 as expected.
256
257 This should resolve bug #21766.
258
259 06 Apr 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
260 For some reason sandbox fails with a 'open_wr' if you run 'locale -a' under
261 it (bug #16298).
262
263 Problem is that for some reason locale fopen's locale.alias with mode "rm".
264
265 -------------------------------------------------------
266 nosferatu root # grep fopen locale.log
267 fopen("/usr/share/locale/locale.alias", "rm"ACCESS DENIED open_wr: /usr/share/locale/locale.alias
268 nosferatu root #
269 --------------------------------------------------------
270
271 I checked the source of locale, but it have fopen with mode 'r', so
272 not sure where the "rm" mode comes from. Anyhow, changed the check in
273 before_syscall_open_char() to also see mode "rm" as readonly.
274
275 23 Feb 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
276
277 Add glibc-2.3 support.
278
279 22 Feb 2003; Martin Schlemmer <azarah@gentoo.org> sandbox.c :
280
281 Some /etc/ld.so.preload fixes. Just changed the #if defines to cover all
282 operations releated to preload, as well as only try to modify ld.so.preload
283 if we can. Also modify to write the pid to /tmp/sandboxpids.tmp even when
284 not using ld.so.preload. Fix to not write this instance of sandbox's pid
285 to /tmp/sandboxpids.tmp on exit if this is not the last sandbox running.
286
287 22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> Makefile :
288
289 Changed the LD to CC for hppa.
290
291 22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
292
293 Killed the previous changes I made.
294
295 17 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
296
297 Added parisc to BROKEN_RTLD_ARCHLIST to see if it we can fix the relocation probs.
298
299 09 Jan 2003; J Robert Ray <jrray@gentoo.org> sandbox.c :
300
301 Don't segfault if $HOME isn't set, set $HOME to "/" instead. Fixes bug 10868.
302
303 16 Dec 2002; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
304
305 Fix memory leak for mips, bug #12236. Thanks to Torgeir Hansen <torgeir@trenger.ro>
306 for this fix.
307
308 4 Dec 2002; J Robert Ray <jrray@gentoo.org> sandbox.h sandbox_futils.c :
309
310 sandbox_futils defined a dirname() function that was masking the same
311 function in glibc and was broken (e.g.: SANDBOX_DIR was being set to
312 '/usr/lib/portage/bi/'). Fixed function to return expected results and
313 renamed it to sb_dirname() to no longer mask the glibc function. Closes bug
314 11231.
315
316 4 Dec 2002; Martin Schlemmer <azarah@gentoo.org> :
317
318 Fix a segfault in libsandbox.c if canonicalize() was called with
319 first parameter = NULL.
320
321 1 Sep 2002; Martin Schlemmer <azarah@gentoo.org> :
322
323 Fix my braindead 'return 1;' in a void function. Updated sandbox.c,
324 cleanup() for this.
325
326 Change cleanup() in sandbox.c not to exit with fail status if
327 the pidsfile is missing. We really should still display sandbox
328 violations if they occured.
329
330 31 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
331
332 Update cleanup() in sandbox.c to remove the PIDSFILE if this is
333 the last sandbox running.
334
335 25 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
336
337 Major cleanups to mainly libsandbox.c again.
338
339 22 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
340
341 Add copyrights to sandbox.h and sandbox_futils.h. If wrong, the
342 parties involved should please contact me so that we can fix it.
343
344 Add opendir wrapper to libsandbox.c.
345
346 21 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
347
348 Do some more cleanups to ecanonicalize(), as it dropped filenames in
349 rare cases (after my symlink cleanups), and caused glibc to bork.
350 These fixes went into canonicalize.c.
351
352 20 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
353
354 Fix spawn_shell() and main() in sandbox.c to properly return fail
355 status.
356
357 19 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
358
359 The new canonicalize() function in libsandbox.c also resolved symlinks,
360 which caused on cleaning sandbox errors if the symlink pointed to a
361 file in the live root. Ripped out canonicalize() and realpath() from
362 glibc; removed the symlink stuff, and changed them to ecanonicalize()
363 and erealpath().
364
365 18 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
366
367 Ripped out all the wrappers, and implemented those of InstallWatch.
368 Losts of cleanups and bugfixes. Implement a execve that forces
369 $LIBSANDBOX in $LD_PRELOAD. We can now thus do away with the feared
370 /etc/ld.so.preload (*g*) ... Made the needed changes to sandbox.c,
371 sandbox.h and sandbox_futils.c. Rewrote the Makefile for most
372 parts; it now have an install target.
373
374 Reformat the whole thing to look somewhat like the reworked sandbox.c
375 and new sandbox.h and sandbox_futils.c from:
376
377 Brad House <brad@mainstreetsoftworks.com>.
378
379 Additional Copyrights now due to the InstallWatch code:
380
381 Copyright (C) 1998-9 Pancrazio `Ezio' de Mauro <p@demauro.net>

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